Oil filter



F. M. YOUNG Nov. 22, 1938.

OIL FILTER Filed Deo. 23, 1936 /NI/E/V TOR EMD M. You/VG BY/Q/j Jor @y Patented Nov. 22, 1938 OIL FILTER Fred M. Young, Racine, Wis., assignor of onehalf to Sarah R. Lorraine, Glendale, Calif.

Application December 23, 1936, Serial No. 117,298

4 Claims.

My invention relates to filters used principally for cleaning the circulating oil in internal combustion engines and the like, and has for its object passing all or a portion of the circulating oil through a number of closely iitting metal contact surfaces. Each of the members comprises preferably a knife edge or a very narrow edge in contact with a somewhat wider edge on the adjacent member.

A novel feature of my invention is the forming of the contacting surfaces on opposite sides of rings whereby the rings may be stacked so as to form the outer wall of an inclosure into which the oil to be cleaned or filtered is fed.

A novel feature of the present invention is the outer and inner chambers, the inner chamber being formed by two spaced end plates and filtering rings therebetween, including the means for yieldingly holding this assembly together, whereby the oil pressure will in a measure counteract the pressure on the rings but the oil will be forced to escape between smooth contact rings which are under pressure.

The principal object of the invention is to eliminate the use of fibrous filtering material, which material is objectionable because. it is not uniform in mesh and texture, and particles of which siuii oif and then pass into the circulating tubes and bearings, which is extremely undesirable for obvious reasons.

A further object of my invention is to provide a filter which is very simple, easily taken apart and cleaned and reassembled, and whereby all of the foreign matter separated from the oil, is permitted to settle in the bottom of the housing or in the bottom of the chamber formed by the rings.

A further object of my invention is-to provide means whereby the tension between the rings may be changed by changing or adjusting the spring, to thereby accommodate the filter to various requirements.

Circular rings as filtering means are particularly suited to the invention because the contacting surfaces may be easily and accurately machined, and when they are bound together, the combined length of the filtering surface may be many feet and still occupy a very small area.

A novel feature `of my invention is that the ltering means is practically indestructible and may be easily removed, cleaned and replaced without danger of injury or misplacement.

To these and other useful ends the present invention consists of parts and combinations thereof or their equivalents as hereinafter set forth and claimed and shown in the accompanying drawing in which:

Fig. 1 is a transverse vertical section of the preferred form of my invention, taken on line I-I of Figure 2.

Fig. 2 is a bottom view of the device, some of the parts being shown by dotted lines.

Fig. 3 is a sectional view of a modication of the filter rings.

Fig. 4 is an enlarged section of a fraction of two rings as illustrated in Figure 1, but positioned with the narrow edges up.

As thus illustrated numeral I0 designates the chamber or outer housing of the filter, the top plate Il being removable for insertion of the itering unit and having suitable surfaces whereby a gasket I2 may be used for sealing the joint between these members by means of bolts I3.

I provide a drain opening I4 in the base of chamber Ill and an outlet opening I5 in the top of this chamber. I provide a tube I6 which is secured at its bottom to a screw threaded member I1, this member being screw threaded into chamber I0 as indicated. Member I1 is provided with a screw threaded inlet opening as at I8. H

Plate II is provided with an orifice I9 through which tube I6 extends, the end of the tube being screw threaded as at 20, this end protruding through orifice I9 far enough to receive an acorn nut 22 under which a gasket 23 is positioned; thus clearly when tube I6 is in the position shown, nut 22 may be tightened and an oil tight chamber provided.

A flanged ring 30 is secured to tube I6. This ring is provided with spaced rods 3| (see dotted lines in Figure 2). A plate 21 having an orifice 32 which snugly embraces tube I6 is provided. Plate 21 is also provided with orifices 28 which snugly embrace rods 3|; thus plate 21 may be moved longitudinally on tube I6 and rods 3l.

Ihe inner peripheral surfaces of plates 21 and 30 are ground or machined true as at 35 and 36. The space between 35 and 36 is filled by a large number of filter rings 31 each having a wide surface 38 which is machined or ground true. These rings have inner and outer surfaces 39 and 40 which converge forming an apex as at 4I. This surface 4I is preferably ground or machined flat (as indicated in Figure 4), forming a very narrow surface or it may be left knife edged.

A novel feature of applicants device is the adaptability of his filter rings. They are preferably made of metal and therefore may be cheaply and accurately formed. Variously shaped rings may be manufactured and assembled in the outer housing with a view to meet- .ing the requirements of the installations to which they are to be applied, each unit bearing a mark indicating the type or shape of ring therein. Between plates 21 and i0, a number of spaced orinces 42 are provided in tube Il.

I provide a spring I3 which acts to press the rings together thus forming a'spring sealed inner chamber Il into which the oil will ilow from inlet It, spring 4I holding the rings snugly together, the pressure'of the oil, however, being sumcient to/,cause it to pass out of this chamber in a very thin nlm between the rings and into the outer chamber whence it may return to the engine from outlet I5.

Referring to Figure 3 it will be noted that I provide disks 45 which are pressed from flat stock and finished so as to provide contact points similar to surfaces 38 and Il -of Figure 4.

, 'I'hese disks, as will be noted. have openings in their centers which loosely embrace tube IC and thus they will be self centering. I provide a,

number of large openings 50 for free passagevof oil between the disks. g

In Figure 4 I illustrate the rings as reversed from that shown in Figure 1, that is, the narrow edges point upward, thus to prevent the accumulation of foreign matter around the surfaces. A

Thusit will be seen that I have provided a simple, neat and emcient oil filter which is prac- :risalire` the narrow edges contact the wide edges on the adjacent rings, a spring on said tube being posi? tioned to press on one of said end members to thereby yieldingly hold said rings together, an outlet in said outer chamber and an inlet to said inner chamber in said tube, whereby oil enter-- ing said tube will pass from said inner chamber between said rings to said outer chamber.

3. A filter of the class described, comprising van outer chamber' and an inner chamber, said inner chamber formed by. two end plates and a multiplicity of rings` stacked one on the other and positioned between said end plates to thereby form the wall of said inner chamber, a tube having an inlet extending through each said chambers, one of said end plates being rigidly secured to said tube and the other end plate being s lidably mounted thereon, a spring on said tube adapted to press on said slidably mounted plate to thereby yieldingly hold said rings together, an 'opening cally indestructible and easily clelhed- ,It Wm/ in said tube to said inner-chamber, an outlet in be understood that many minor detail changes may be' made without departing from the spirityl and scope ot thev invention as recited in the apchamber outlet pended claims.

I claim: v

. 1. A filter of the class described, comprising an outer chamber having an outlet, aninnerchamf ber having an inlet tube from the exterior of 'said' first chamber, said innerchamber comprising' v two spaced members and a multiplicity of metal/ rings assembled one over the other and positioned f between said end plates to thereby form the wall .of said inner chamber, said tube extending 'ing faced true on th'eir contacting surfaces, a number of spaced rods supported by said end L members and positioned to contact the, inner edges of said rings thereby to hold said rings 55 alignment.

said outer chamber whereby oil may be forced between said rings from said tube inlet to said 4. A einer of the class described, comprising m combination, an outer chamber and an inner chamber, said inner chamber formed by means ofend members and a multiplicity of individual wall of said inner chamber, means adapted to individually hold said rings in augment, an inlet connection from the exterior ofsaid outer chamber to the interior of said inner chamber and A.means whereby said rings are yieldingly held together under pressure, an outlet opening in said outer chamber whereby liquid entering said inner and wide smooth edge surfaces and being stackedV with the narrow surfaces lin contact with the wide surfaces of the adjacent ring.

man M. YOUNG. 

